He will replace outgoing Water and Primary Industries Minister Niall Blair, who revealed after the NSW election on the weekend that he would be resigning from the ministry and the deputy leader position.

Mr Blair said the abuse he had received about the fish kills in the Murray-Darling Basin had taken a toll on himself and his family.

The vote for the leadership positions in the NSW Nationals was held on Friday morning in Sydney.

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It came at the end of a memorable week for Mr Toole, who was comfortably re-elected as Bathurst's local member last Saturday.

Mr Toole received about 56 per cent of the first preference votes and around 67 per cent of two-candidate preferred.

He has been Racing, Lands and Forestry Minister since 2017, but Premier Gladys Berejiklian has yet to reveal the make-up of her new post-election ministry.

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